diff options
| author | Ingo Molnar <mingo@kernel.org> | 2017-09-04 11:01:18 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2017-09-04 11:01:18 +0200 |
| commit | edc2988c548db05e33b921fed15821010bc74895 (patch) | |
| tree | b35860428acea35e5866d4cf007519ed943a85de /drivers/infiniband/ulp/ipoib/ipoib_vlan.c | |
| parent | d82fed75294229abc9d757f08a4817febae6c4f4 (diff) | |
| parent | 81a84ad3cb5711cec79f4dd53a4ce026b092c432 (diff) | |
Merge branch 'linus' into locking/core, to fix up conflicts
Conflicts:
mm/page_alloc.c
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'drivers/infiniband/ulp/ipoib/ipoib_vlan.c')
| -rw-r--r-- | drivers/infiniband/ulp/ipoib/ipoib_vlan.c | 22 |
1 files changed, 18 insertions, 4 deletions
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_vlan.c b/drivers/infiniband/ulp/ipoib/ipoib_vlan.c index 081b33deff1b..9927cd6b7082 100644 --- a/drivers/infiniband/ulp/ipoib/ipoib_vlan.c +++ b/drivers/infiniband/ulp/ipoib/ipoib_vlan.c @@ -133,12 +133,20 @@ int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey) snprintf(intf_name, sizeof intf_name, "%s.%04x", ppriv->dev->name, pkey); - if (!rtnl_trylock()) + if (!mutex_trylock(&ppriv->sysfs_mutex)) return restart_syscall(); + if (!rtnl_trylock()) { + mutex_unlock(&ppriv->sysfs_mutex); + return restart_syscall(); + } + priv = ipoib_intf_alloc(ppriv->ca, ppriv->port, intf_name); - if (!priv) + if (!priv) { + rtnl_unlock(); + mutex_unlock(&ppriv->sysfs_mutex); return -ENOMEM; + } down_write(&ppriv->vlan_rwsem); @@ -164,8 +172,8 @@ int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey) out: up_write(&ppriv->vlan_rwsem); - rtnl_unlock(); + mutex_unlock(&ppriv->sysfs_mutex); if (result) { free_netdev(priv->dev); @@ -188,8 +196,13 @@ int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey) if (test_bit(IPOIB_FLAG_GOING_DOWN, &ppriv->flags)) return -EPERM; - if (!rtnl_trylock()) + if (!mutex_trylock(&ppriv->sysfs_mutex)) + return restart_syscall(); + + if (!rtnl_trylock()) { + mutex_unlock(&ppriv->sysfs_mutex); return restart_syscall(); + } down_write(&ppriv->vlan_rwsem); list_for_each_entry_safe(priv, tpriv, &ppriv->child_intfs, list) { @@ -208,6 +221,7 @@ int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey) } rtnl_unlock(); + mutex_unlock(&ppriv->sysfs_mutex); if (dev) { free_netdev(dev); |